选矿厂浮选过程自动加药控制系统的研究

发布时间：2018-01-20 08:02

本文关键词： 浮选加药 S7-300PLC 泡沫图像组态特征提取　出处：《西安建筑科技大学》2016年硕士论文　论文类型：学位论文

【摘要】：浮选技术是一种比较重要的选矿方法。浮选过程中所添加的药剂量大小、及时准确与否以及浮选设备液面的高低、充气量的大小等因素都直接影响着产品的数质量和企业的效益。随着国内外学者对浮选自动化控制系统的深入研究,实现浮选过程的自动化不但能够克服传统人工调节的缺点,还可以通过对浮选过程的稳定与优化控制降低浮选生产的能耗,减轻了岗位工人的劳动强度,为选矿厂带来直接的经济效益。本文针对金堆城百花岭选矿厂浮选加药控制系统进行了深入的研究,并在原有的加药控制系统上提出了加药PLC自动控制的目标。介绍了由图像采集及数字图像识别系统、PLC自动加药控制系统组成的智能加药系统。本文通过工控机对CCD摄像头拍摄的浮选泡沫图像进行分析处理,提取出可以表示泡沫层特征的参数,并建立了浮选综合效率和药剂用量回归模型。利用所得模型对浮选泡沫图像进行识别,将识别结果反馈给PLC加药系统,控制浮选药剂的添加。针对浮选自动加药控制系统的要求,设计开发了浮选加药PLC控制系统软件部分,包括控制软件和监控软件。其中控制软件是基于西门子STEP7开发的,监控软件是基于西门子WINCC V6.0开发的,用于实现对浮选过程检测的实时数据进行采集、存储、处理及调整等功能。
[Abstract]:Flotation technology is a relatively important mineral processing method. The amount of reagent added in the flotation process, timely and accurate or not, as well as the level of floatation equipment. The amount of inflation and other factors directly affect the number and quality of products and the benefits of enterprises. With the in-depth study of automatic flotation control system by domestic and foreign scholars. Realizing the automation of flotation process can not only overcome the shortcomings of traditional manual adjustment, but also reduce the energy consumption of flotation production through the stability and optimization control of flotation process, and reduce the labor intensity of workers. In order to bring direct economic benefits to the concentrator, the control system of flotation dosing in Bahualing Concentrator of Jinduicheng is studied in this paper. The aim of PLC automatic control is put forward on the original dosing control system. The image acquisition and digital image recognition system are introduced. Intelligent dosing system composed of PLC automatic dosing control system. In this paper, the flotation foam images taken by CCD camera are analyzed and processed by industrial control computer, and the parameters which can represent the foam layer characteristics are extracted. A regression model of flotation efficiency and reagent dosage was established. The model was used to identify the flotation foam image, and the recognition result was fed back to the PLC dosing system. To control the addition of flotation reagents. According to the requirements of automatic flotation dosing control system, the software of PLC control system for flotation dosing is designed and developed. The control software is based on Siemens STEP7, and the monitoring software is based on Siemens WINCC V6.0. It is used to collect, store, process and adjust the real-time data of flotation process.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD928.9;TP273

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